Principle Of Energy Conservation

In this article we will learn about the principle of energy conversion and also studied about the cost reducing technique of energy.

Principle Of Energy Conservation

Two principles of energy conservation planning are maximum energy efficiency and maximum cost effective-ess in energy use.

Maximum Energy Efficiency

A device system or process is working at maximum energy efficiency when maximum work is done for a given magnitude of energy input. Only a part of the energy input is converted into useful work. The remainder is lost is energy conversion and transfer process and energy discharge.
Work = Energy input – input – energy loss is conversion transfer – energy discharge.
Energy input can be in the form of fossil fuels or latent heat in vapor and gaseous streams or electrical energy. It is heat in vapor and gaseous streams or electrical energy. It is necessary to measure input to determine efficiency.
Work is done by a force causing a motion. Its magnitude is equal to the product of force and displacement e.g., in a turbine or motor the work is measured by the force and number of rotations of the turbine.
principle of energy conversion , energy cost reducing techniqe
Energy loss is conversion and transfer is a necessary part of energy utilization. No process is 100% efficient. The energy losses can be electrical, mechanical, heat, chemical etc. this energy loss is finally dissipated to the surroundings in the form of heat .this heat is transferred to the surrounding by conduction, convection and radiation.
It is evident that system efficiency would improve if energy loss in conversion and transfer and energy discharge is minimized. All energy conversion techniques aim at reducing these losses.

Maximum cost effectiveness in energy use

Implementation of energy conservation entails additional investment. This investment increases as more and more energy conservation measures are adopted. Because of implementation of these measures the fuel costs decrease as extent of conservation in increased. The total cost per unit output is the per unit output and fuel costs per unit output as shown. Evidently maximum cost effectiveness in energy use is obtained when total costs are the least. Around point M (provided energy prices are constant). For better understand about principle of energy conversion we need to also know about the energy cost reduction which is given below.

Energy cost reduction

Off-peak energy utilization

A solution to improving plant capacity factor is to encourage, through lower rates, the use of off-peak energy.
The benefits derived from off-peak energy sales are:
1. Improved capacity factors and hence lower capacity cost and better utilization of investment.
2. Reduced need for peaking units resulting in lower plant capacity and lower production and maintenance costs of fossil peaking units.


Co-generation means sequential conversion of energy contained in fuel into two or more usable forms. There can be two-types of co-generation system.
a. implant power generation system
b. Reject heat utilization system

Co-generation technologies

The different co-generation system is
a. steam turbine system
b. Gas turbine system
c. combined cycles Co-generation system
d. diesel engine system

Energy Conversion

Energy conservation means using energy more efficiency and reducing wastage of energy. Energy has an important role in our day to day life. Energy conservation requires new investments in more efficient equipment to replace old inefficient ones. By energy conservation we can get more job opportunities, lower cost, cheaper and better products.
Hence it is the principle of energy conversion if you will find any incorrect above please comment below in comment box.

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